Add menu functions

Updated to test util

tests/o.c

@@ -1 +0,0 @@
-#include ""

tests/o.h

@@ -1,3 +0,0 @@
-void print(char *text)
-void println(char *text)
-

tests/run

@@ -1,4 +1,5 @@
 #!/bin/bash
 
-gcc work1.c -o work1
-./work1
+rm -r work1
+
+gcc work1.c -o work1 && ./work1

tests/util.c

@@ -0,0 +1,14 @@
+#include "stdio.h"
+
+void print(char *text) {
+    printf(text);
+}
+
+void println(char *text) {
+    newline();
+    print(text);
+}
+
+void newline() {
+    printf("\n");
+}

tests/work1.c

@@ -1,6 +1,7 @@
 #include "stdio.h"
 #include "string.h"
 #include "stdlib.h"
+#include "util.c"
 
 struct person_tag
 {
@@ -60,9 +61,12 @@ int main()
     
     display_menu();
 
-    scanf("\nenter the option: ", selected);
 
-    menu(selected);
+    newline();
+
+    // scanf("\nenter the option: ", selected);
+
+    // menu(selected);
 
     return 0;
 }
@@ -107,5 +111,25 @@ void display_menu() {
 }
 
 void display_students() {
-    printf()
+    
+}
+
+void search_student() {
+
+}
+
+void find_maximum() {
+
+}
+
+void find_failed() {
+
+}
+
+void update_file() {
+
+}
+
+void exit_program() {
+    println("Goodbye...");
 }